Road Stream Crossing Site LIN_MLCD012

Lincoln River Watershed, Amber Creek
Pratt Rd
Victory Twp, Mason County
Information collected by:
Mason-Lake Conservation District
Site Location
GPS Coordinates: 43.99483 , -86.30154
T19N R17W Sec 35
Owned by Private
Fish Passability 0.9
Total Erosion: 1.1575 tons/year
Severity: Moderate
Year Inventoried: 2019
Inlet
Outlet
Upstream Conditions
Downstream Conditions
Road Approach - Left
Road Approach - Right
Crossing Information
Type of Crossing: culvert(s)
Number of Structures: 1
Structure Shape: Round
Inlet Type: Projecting
Outlet Type: At Stream Grade
Structure Material: Metal
Structure Substrate: Mixture
General Conditions: Good
Structure Interior: corrugated
Dimensions of Structure: Length 58 ft. , Width 3 ft. , Height 3 ft.
Structure Inlet
Water Depth: 0.6 ft.
Embedded Depth of Structure: 0 ft.
Water Velocity*: 0.4 ft./sec.
Structure Outlet
Water Depth: 0.8 ft.
Embedded Depth of Structure: 0.8 ft.
Water Velocity*: 0.1 ft./sec.
*Water Velocities were measured 0.4 ft. below Surface (with Meter)
Stream Information
Stream Flow: Less than 1/2 Bankfull
Upstream Pond: Length 12 ft. , Width 10.5 ft.
Riffle Information
Water Depth: 0.5 ft.
Bankfull Width: 12.5 ft.
Wetted Width: 8.5 ft.
Water Velocity: 1 ft./sec. (Measured with Meter)
Dominant Substrate: Silt
Road Information
Gravel County Road
Road Condition: Good
Road Width at Culvert: 20 ft.
Location of Low Point: At Stream
Runoff Path: Ditch
Embankments
Upstream
Fill Depth: 3 ft.
Slope: More than 1:2
Downstream
Fill Depth: 3 ft.
Slope: More than 1:2
Approaches
Left Approach
Length: 400 ft.
Slope: 1% to 5%
Vegetation: Heavy
LS Factor: 0.48
Erosion: 1.0579 tons/year
Right Approach
Length: 300 ft.
Slope: Less Than 1%
Vegetation: Heavy
LS Factor: 0.05
Erosion: 0.0826 tons/year
Erosion Information
Total Erosion at Crossing: 1.1575 tons/year
Extent of Erosion: Minor
Notes: Embankment of inlet, left side facing downstream
Location of Erosion
Erosion Dimensions
Eroded Material
Material Eroded
Total Erosion
facing downstream
Length
Width
Depth
Reaching Stream?
(tons/year)
Left Upstream Embankment
10 ft.
1 ft.
2 ft.
yes
Silt
0.017
Summary Information
Fish Passability 0.9
These non-native species were observerd at this site: a vine-like Nightshade